Since nova.conf is built dynamically you need to make the changes to the puppet manifests, looks like in fuel-library that would be in:
fuel-library/deployment/puppet/osnailyfacter/manifests/cluster_ha.pp
fuel-library/deployment/puppet/osnailyfacter/manifests/cluster_ha_full.pp
fuel-library/deployment/puppet/osnailyfacter/manifests/cluster_simple.pp
Couple that with the matching adjustments in fuel-web:
fuel-web/nailgun/nailgun/fixtures/openstack.yaml
Since nova.conf is built dynamically you need to make the changes to the puppet manifests, looks like in fuel-library that would be in: deployment/ puppet/ osnailyfacter/ manifests/ cluster_ ha.pp deployment/ puppet/ osnailyfacter/ manifests/ cluster_ ha_full. pp deployment/ puppet/ osnailyfacter/ manifests/ cluster_ simple. pp
fuel-library/
fuel-library/
fuel-library/
Couple that with the matching adjustments in fuel-web: nailgun/ nailgun/ fixtures/ openstack. yaml
fuel-web/
and you should be good to go.